The ornamental design for an illuminating cuprim, as shown and described.
FIG. 1 is a top view of a first embodiment of the cup rim having an inner illuminating region showing the new design, wherein the inner illuminating region is in an illuminating state;
FIG. 2 is a perspective view of the cup rim thereof;
FIG. 3 is a side view of the cup rim thereof; and
FIG. 4 is a bottom view of the cup rim thereof.
FIG. 5 is a top view of the first embodiment of the cup rim having an inner illuminating region showing the new design, wherein the inner illuminating region is not illuminated;
FIG. 6 is a perspective view of the cup rim thereof; and,
FIG. 7 is a side view of the cup rim thereof.
All broken lines are directed to environment and are for illustrative purposes only. The broken lines form no part of the claimed design. The broken lines radiating from the cup rim in FIGS. 1-4 indicate illumination only and form no part of the claimed design. The dark shading in FIGS. 5-7 compared to the same region shown unshaded in FIGS. 1-4 indicates a contrast in appearance between unlit and lit regions, and does not depict any particular color, texture, or material.